1. What is the purpose of Periodic Inspection and Testing?
2. When is it acceptable to replace Periodic Inspection and Testing?
3. List 3 factors that can cause an electrical installation to deteriorate?
4. Is the Electricity at Work Regulations 1989 a statutory or non-statutory document?
5. What 4 factors should you take into account when determining the frequency of Periodic Inspection and Testing?
6. Periodic Inspection and Testing can be carried out using "sampling" i.e. only a certain percentage of the installation is inspected and tested, with whom should this percentage be agreed?
7. For safety reasons what type of inspection must be carried out before testing or opening enclosures?
8. What action should be taken on the discovery of signs of overheating?
9. List the 4 methods used to provide Basic Protection?
10. What is the wording required on labels to BS 951 at earthing and bonding connections?
11. The requirements for labelling in caravans comes under which Part of BS 7671?
12. What is the suggested minimum sample size for Earthing and protective bonding conductors as listed in Table 3.3?
13. From Table 3.4, at what positions should the Earth fault loop impedance test be carried out?
14. What is an acceptable alternative method of carrying out an Insulation Resistance test on a circuit if it is impractical to disconnect equipment sensitive to the test?
15. What would the implication be if there was a line-earth fault in an installation which had reversed polarity?
16. What are the documents that make up the full Electrical Installation Condition Report?
17. Give an example of a suitable means of securing a switch provided for mechanical maintenance in the open position.
18. From Table 3.5, what are the descriptions for the classification codes C1, C2 and C3?
The answers to the questions above are mainly contained in Guidance Note 3 although some cross reference to BS 7671 or the On Site Guide may be necessary.
